A Microsoft employee was arrested on child pornography charges after the company alerted authorities, according to court documents. (MIKE SEGAR/REUTERS)

A Microsoft employee was arrested on child pornography charges after the company alerted authorities, according to court documents.

Gregory Rentfro, 49, of Duvall, was held at King County Jail Thursday on numerous charges.

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Rentfro - who described himself as a Microsoft "senior security goon" in his Facebook profile - was investigated after Microsoft contacted the National Center for Missing and Exploited Children that "one of their customers had uploaded four images of minors engaged in sexually explicit conduct," according to court documents obtained by CBS affiliate KIRO-TV.